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Standard Procedure for Groundwater Sampling—Petroleum Hydrocarbons (continued) <br /> Page 2 of 2 <br /> Trip Blanks <br /> To help assure the quality of the collected samples and to evaluate the potential for cross <br /> contamination during transport to the laboratory, a distilled-water trip blank accompanies the <br /> samples in the cooler The trip blank Is analyzed for the presence of volatile organic <br /> compounds of concern For petroleum hydrocarbons, the trip blank is typically analyzed for <br /> TPHg, BTEX, and MtBE by EPA Method 8260B <br /> Containment and Disposal of Generated Water/LPH <br /> Waste water generated during decontamination of equipment is pumped Into a SECOR <br /> truck-mounted water tank The water is then transported to ARCO's holding facility In West <br /> Sacramento, California for temporary storage Once the ARCO holding tank has reached <br /> capacity, URS Corporation (URS) coordinates the transport of the purge water by <br /> Integrated Waste Management, Inc (IWM) to Seaport Environmental In Redwood City, <br /> California for proper disposal <br /> Related Procedures <br /> • Standard Procedure for Equipment Decontamination <br /> 1 1Con000Phil13ps1Retad 5ites1111931QMR14QMR04 Final doe <br />